US4721414AExpiredUtility

Marine fenders

Assignee: BRIDGESTONE CORPPriority: Mar 9, 1985Filed: Mar 10, 1986Granted: Jan 26, 1988

Est. expiryMar 9, 2005(expired)· nominal 20-yr term from priority

Inventors:Hitoshi Akiyama

E02B 3/26F16F 1/373Y02A30/30

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Claims

Abstract

A marine fender used for mitigating a berthing shock of a vessel is disclosed, which is mounted to a berthing wall and made from an elastomeric material. This marine fender comprises a main cylindrical portion having a fitting flange, and a closed head portion formed by outwardly extending the front end of the main cylindrical portion.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
       1. A marine fender mounted to a berthing wall and made from an elastomeric material, comprising; a main cylindrical portion having a fitting flange on its base end, and a closed head portion formed by outwardly extending the front end of the main cylindrical portion, wherein rigidities of said main cylindrical portion and a contact part of said head portion are greater than that of a peripheral part of said head portion joining said main cylindrical portion and said marine fender satisfies the following relations:   1/4≦h/H≦1,     and     1&lt;d/D≦3,     wherein h is a height of the closed head portion, H is a height of the main cylindrical portion, d is an outer diameter of the closed head portion and D is an outer diameter of the small size part of the main cylindrical portion.   
     
     
       2. The marine fender according to claim 1, wherein said closed head portion is provided with a reinforcing member embedded there. 
     
     
       3. The marine fender according to claim 1, wherein said main cylindrical portion and said closed head portion are formed separately and joined with each other through bolts as one body.

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